Combine these three velocity vectors into a resultant: 3.0 m/s north, 4.0 m/s east, 1.0 m/s west. Identify the resultant vector. O A. 13 m/s north
OB. 8 m/s northeast
OC. 4.2 m/s northeast
OD. 4.2 m/s southwest

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )